【摘要】：瓊東南盆地深水區(qū)新發(fā)現(xiàn)了陵水A-2大氣田,鉆井揭示其中央峽谷黃流組內(nèi)充填有多期優(yōu)質(zhì)厚層的濁積水道砂巖,且被后期泥質(zhì)水道切割及塊體流改造,各期砂體的疊置關(guān)系復(fù)雜。為此,利用三維地震、最新鉆井巖心、壁心、巖屑化驗(yàn)及測井等資料,綜合分析了瓊東南盆地中央峽谷充填砂體的成因及其展布規(guī)律。結(jié)果表明:中央峽谷內(nèi)黃流組至少發(fā)育4套厚層優(yōu)質(zhì)儲(chǔ)層,且以灰色細(xì)砂巖、粉砂巖為主,砂體為濁流沉積。砂體的堆積樣式為垂向孤立式和側(cè)向加積復(fù)合式。砂體的分布具有分段性,縱向上HL_Ⅰ砂組和HL_Ⅱ砂組在中央峽谷內(nèi)均有發(fā)育,HL_Ⅲ砂組和HL_Ⅳ砂組在中央峽谷中下游段發(fā)育;橫向上,峽谷平直段—低彎曲段砂體一般連片分布,中—高彎度段砂體呈獨(dú)立塊狀分布。另外,根據(jù)中央峽谷內(nèi)砂體在縱向上相互疊置、橫向上連片分布的特征,建立了中央峽谷黃流組5期砂體在空間上的立體展布模式,對預(yù)測類似砂體分布具有重要意義。
[Abstract]:In the deep water area of Qiongdongnan Basin, a new gas field, Lingshui A\ + 2, has been discovered. The drilling shows that there are many high quality turbidite channel sandstone filled in the Yellow Stream formation of the central canyon, and it is cut by the later muddy channel and modified by the block flow. The overlaying relationship of sand bodies in each stage is complex. In this paper, the genesis and distribution of filling sand body in the central canyon of Qiongdongnan Basin are comprehensively analyzed by using three-dimensional seismic data, the latest drilling core, wall core, cuttings test and well logging data. The results show that at least four sets of thick and high quality reservoirs are developed in the Huangliu formation in the central canyon, with gray fine sandstone and siltstone as the main sand body and turbidite deposits. The stacking pattern of sand body is vertical solitary and lateral accretion compound. The distribution of sand bodies was divided into segments. The HL_ 鈪，

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